Archives for July, 2017

A new study shows that walking your dog is good for your health. Here is a YouTube video summarizing the findings of the study: Let’s not forget that walking your dog is also very good for your dog. According to PetMD, some benefits include weight control, keeping your dog limber, controlling destructive behaviors and hyperactivity,…

A truly extraordinary octopus

I came across this amazing video on YouTube showing a species of octopus found in Northern Australia that is adapted to walk on land:

Pacific hagfish (Eptatretus stoutii), aka “slime eels”, are primitive fish that occupy burrows on the ocean floor. Like earthworms, they have 5 hearts. They have no true eyes, no jaws, nor do they have a stomach. They locate their meals through great senses of smell and touch. In addition to small invertebrates, they are known…

Image By Jackie – Flickr: Cliche, CC BY 2.0, via Wikimedia Commons https://commons.wikimedia.org/w/index.php?curid=24285298 Proteins are not normally found in the urine of healthy individuals as the filtering units of the kidney prevent the loss of large proteins and smaller ones are typically reabsorbed. A team of researchers at the University of Sao Paulo in Brazil…

Researchers at the International AIDS Vaccine Initiative at Scripps Research Institute have discovered that cows can produce antibodies that effectively neutralize HIV. Thus far, developing an effective vaccine for HIV has been hampered by the ability of the virus to mutate. Some people who have been infected with the virus for a period of years develop antibodies that are…

Dr. Michael Tobler and Dr. Zach Culumber at Kansas State University examined 112 species of live-bearing fish (Poeciliidae) and have made some interesting discoveries about their evolution. Their analyses included information on body shape, fin size, where the species are found and information on global climate. What they discovered is that the evolution of female fish is…

The mitral valve is located between the left atrium and left ventricle of the heart where it serves an important role in preventing backflow of blood into the left atrium as the ventricle contracts. Mitral valve prolapse, a condition that occurs in humans, is characterized by regurgitation of blood into the left atrium, which receives blood from the lungs.…

  Preeclampsia is a serious complication that develops in about 5-8% of pregnant women. It is characterized by elevated blood pressure and is typically accompanied by excess protein in the urine (a sign of kidney problems). Symptoms often (but not always) return to normal after delivery of the baby. Elabela is a recently discovered micropeptide secreted by the placenta in…

Humans are not the only primates that spontaneously develop hypertension. A new study published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology, examined the development of spontaneous hypertension in African Green Monkeys (Chlorocebus aethiops sabaeus; aka: vervets). The team measured blood pressure in 424 adult monkeys and found that 37% had…

Surfactant is a lipoprotein substance that is secreted by special cells located in the alveoli of our lungs. The alveoli are the grape-like structures where gas exchange happens. Without surfactant, these alveoli would collapse and prevent gas exchange. Babies born prematurely often suffer from respiratory distress syndrome because their lungs do not make enough surfactant. Now…